JP2004280743A - Paddy field management system - Google Patents

Abstract

An object of the present invention is to easily perform accurate water level adjustment irrespective of the surface of a rice field, thereby improving the detection accuracy of the water level.
In a paddy field management system for controlling water in a paddy field, a water level detection device for detecting a change in water level based on a current water level in the paddy field is provided.
[Selection diagram] Fig. 4

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a paddy field management system for managing water in a paddy field, for example, in a paddy field for cultivating crops such as paddy rice.
[0002]
[Prior art]
There is a technique for detecting the amount and temperature of water in a paddy field and automatically maintaining the appropriate amount and temperature of water. (For example, see Patent Document 1)
[0003]
[Patent Document 1] JP-A-7-64650
[0004]
[Problems to be solved by the invention]
When installing a water level sensor used to detect the water volume, the water level is usually adjusted with reference to the rice field surface, and the water level is detected. There were inconveniences such as not being able to detect.
[0005]
[Means for Solving the Problems]
Therefore, the present invention provides a paddy field management system that controls water in a paddy field, by providing a water level detecting device that detects a change in water level based on the current water level in the paddy field, and easily adjusts the accurate water level regardless of the paddy surface. To improve the water level detection accuracy.
[0006]
Also, a management unit is provided for intermittently wirelessly communicating the paddy field management information between the master station and each slave station in the set order, so that a communication time is allocated to each slave station, and the power consumption of each slave station is reduced. It is intended to effectively use power in an area where a power source is used, such as a battery that cannot use commercial power.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view of the entire field, in which water from a water source such as a river or a pond is fed into a paddy field 2 through an irrigation channel 1, a hydrant 3 for supplying water to each paddy field, and a drainage for discharging water from each paddy field. A plug 4, a water temperature sensor 5 for measuring the water temperature of each paddy field 2, a temperature sensor 6 for measuring the temperature of each paddy field 2, a water level sensor 7 for measuring the water level of each paddy field 2, and the ground surface or underground temperature Temperature sensor 8 for measuring the electric conductivity, an electric conductivity sensor 9 for measuring the electric conductivity EC which is a substitute characteristic of the pesticide, and an oxidation reduction potential sensor 10 for measuring the oxidation reduction potential Eh. A water supply wireless terminal device 11 that opens and closes the drain 3, a drainage wireless terminal device 12 that opens and closes the drain plug 4, a base station 14 such as a farming office having a water management personal computer such as a host computer in the information collection device 13, Devices 11 and 12 and base station 14 And a relay device 15 that relays a radio signal transmitted and is disposed around paddy 2.
[0008]
As shown in FIG. 2, various data such as water temperature, temperature, water level, and ground temperature measured by the sensors 5, 6, 7, and 8 are collected by the information collecting device of the base station 14 via the terminal devices 11 and 12 and the relay device 15. The information collection device 13 is connected to the information collection device 13 by wireless communication via the relay device 15 and the controller 18 that transmits the information to the information collection device 13 by wireless communication and opens and closes the electromagnetic valves 16 and 17 of the water supply and drain plugs 3 and 4. The water supply and drain cocks 3 and 4 (electromagnetic valves 16 and 17) are controlled to be opened and closed by remote control based on various input data.
[0009]
A mobile phone 21 is bidirectionally connected to the information collecting apparatus 13 via the communication means 20 of the Internet or packet network, and as shown in FIG. -Edits and outputs various data of temperature, date of measurement, measurement time, information of measurement field (paddy field) to mail screen data, and enables information to be sent to any person at any location. In addition, it is provided so that information such as collected data can be easily browsed and settings can be easily changed from the mobile phone 21.
[0010]
When an abnormality such as a failure occurs on the paddy field management system, the cause of the failure is edited into mail screen data and output to the mobile phone 21 from the information collection device 13, and the occurrence of the abnormality is immediately notified to each paddy field manager or the like. Let it.
[0011]
As shown in FIG. 4, the water level sensor 7 is provided with two electrodes 22 and 23 which are arranged vertically at a fixed interval, and a water level indicator 26 for connecting a power supply 24 and a light emitting diode 25 to the electrodes 22 and 23. The lower electrode 23 is immersed in water, and the level of water is detected by changing the capacitance between the electrodes 22 and 23 according to the proportion of water between the upper and lower electrodes 22 and 23. The upper electrode 23 is set in accordance with the level of the water surface to fix the reference level of the water level, or the level value of the water level when the water level sensor 7 is installed is fixed as the reference value, and is not related to the rice field. It is configured to accurately detect the water level.
[0012]
As described above, in the paddy field management system that controls the water in the paddy field 2, the water level sensor 7 that is a water level detecting device that detects a change in the water level based on the current water level of the paddy field 2 is provided. It is possible to easily and accurately adjust the water level and improve the detection accuracy of the water level.
[0013]
As shown in FIGS. 5 and 6, a transceiver 28 is operated by a power source such as a battery 27 in a remote place where commercial power cannot be used, for example, and a transceiver 30 of a management device 29 of a master station such as the base station 14 and each transceiver. Stations A, B, and C perform wireless communication connection with the transceiver 28 of the wireless terminal device 31 to exchange management information data. In this case, as shown in FIG. 6, the communication time of the master station is always in a communication state. On the other hand, the communication time of each of the slave stations A, B, and C is provided in a time slot system in which communication is enabled for the set time in the order set by the timers 32 and 33, and the communication time of the slave stations A, B, and C is set. The terminal device 31 is configured to reduce power consumption.
[0014]
The timer 33 of the terminal device 31 of each of the slave stations A, B, and C synchronizes with the timer 32 of the management device 29.
[0015]
As described above, by providing the management device 29, which is a management unit that performs intermittent wireless communication of paddy field management information between the base station 14 as the master station and each of the slave stations A, B, and C in the set order, The communication time is allocated to A, B, and C, and the power consumption of each of the slave stations A, B, and C is reduced, so that electric power is effectively used in a power use area such as a battery where commercial power cannot be used. be able to.
[0016]
FIG. 7 shows a configuration in which a plurality of control devices 34 for controlling a predetermined number of terminal devices 31 are separately provided in the management device 29. The management device 29 manages and displays various kinds of information and instructs a water level. The control device 34 performs control such as instructing the terminal device 31 by information relay of the terminal device 31 and water management control based on the water level instruction of the management device 29, and the terminal device 31 performs control such as water level, water temperature, ground temperature, and temperature. The paddy field information is collected and transferred, and the control of the water supply / drain taps 3 and 4 is performed according to a command from the control device 34, thereby dispersing the functions of the management device 29 and preventing the failure of the management device 29 from spreading to the entire system.
[0017]
【The invention's effect】
As is clear from the above embodiment, the present invention provides a paddy field management system for controlling water in paddy field 2 in which a water level detecting device 7 for detecting a change in water level based on the current water level in paddy field 2 is provided. Therefore, accurate water level adjustment can be easily performed irrespective of the rice field, and the detection accuracy of the water level can be improved.
[0018]
Further, since the management means 29 for intermittently communicating the paddy field management information with each of the slave stations A, B, and C in the set order is provided, the communication time is allocated to each of the slave stations A, B, and C. Thus, the power consumption of each of the slave stations A, B, and C can be reduced, and effective use of power in a power use area such as a battery where commercial power cannot be used can be achieved.
[Brief description of the drawings]
FIG. 1 is an explanatory diagram of a paddy field.
FIG. 2 is a management circuit diagram.
FIG. 3 is an output flow of mail.
FIG. 4 is an explanatory diagram of a water level sensor.
FIG. 5 is an explanatory diagram of communication of a terminal device using a battery.
FIG. 6 is an explanatory diagram of a communication time slot of a slave station.
FIG. 7 is an explanatory diagram of a management device having a control device.
[Explanation of symbols]
7 Water level sensor (water level detection device)
29 Management device (management means)
A / B / C slave station

Claims (2)

A paddy field management system for controlling water in a paddy field, comprising a water level detection device for detecting a change in water level based on the current water level of the paddy field. 2. The paddy field management system according to claim 1, further comprising management means for intermittently wirelessly communicating the paddy field management information between the master station and each of the slave stations in the set order.

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